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The betta security house has three removable dividers to allow room for 1 to 4 bettas or to separate other fish for breeding or aggression issues.The unit's dimensions are 16" L X 2" W X 4" H. The security house comes with a lid to prevent fish from jumping out.It attaches to the front or back of any 10g tank or larger with strong section cups. Slots located near the bottom of the breeder net allow for fish waste, eggs, and fry to shift through while also allowing water flow to come into the net.

I'm not the biggest fan of breeder net or "tanks within tanks" but as far as they go this one isn't too bad. The biggest plus for this one vs. the rest of them is its length. The fish actually has much more room to swim in this product than most others. It also has slots at the bottom that are good for spawning or birthing fish because the eggs/fry can slip right through. As a betta holder it works good as well. Please only keep one betta in this unit as keeping more in it is not good for the fish. The only downside is the suction cups. While the suction cups allow for the unit to be put anywhere they also sometimes lose their suction. This can be bad when you have two males in the same tank(with one being kept in the divider) or a betta or gourami in the tank. I've come home a few times to both my males swimming around in the main tank and quickly had to put the other one back in the divider. Pushing down on the suction cups everyday helps them stay better though.